设计模式代码实战-建造者模式

1、问题描述

小明家新开了一家自行车工厂，用于使用自行车配件（车架 frame 和车轮 tires ）进行组装定制不同的自行车，包括山地车和公路车。
山地车使用的是Aluminum Frame（铝制车架）和 Knobby Tires（可抓地轮胎），公路车使用的是 Carbon Frame （碳车架）和 Slim Tries。
现在它收到了一笔订单，要求定制一批自行车，请你使用【建造者模式】告诉小明这笔订单需要使用那些自行车配置吧。

输入试例

3
mountain
road
mountain

2、建造者模式

可以分为产品、建造者、指导者

产品仅描述产品信息

建造者包含了建造产品各个部分的方式

指导者 指导 建造者以什么顺序 生成 产品的各个部分

3、代码

import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        int number=sc.nextInt();
        sc.nextLine();

        for(int i=0;i<number;i++){

            String s=sc.nextLine();
            if(s.equals("mountain")){
                Builder builder=new MountainBuilder();
                Director director=new Director(builder);
                director.Construct("Aluminum Frame","Knobby Tires");
                Bike bike=builder.getResult();
                bike.getProperties();
            }else if(s.equals("road")){
                Builder builder=new RoadBuilder();
                Director director=new Director(builder);
                director.Construct("Carbon Frame","Slim Tires");
                Bike bike=builder.getResult();
                bike.getProperties();
            }


        }
    }
}
interface  Bike{
    void setFrame(String frame);
    void setTires(String tires);
    void getProperties();
}
class MountainBike implements Bike{
    String frame;
    String tires;
    public void setFrame(String frame){
        this.frame=frame;
    }

    public void setTires(String tires) {
        this.tires = tires;
    }
    public void getProperties(){
        System.out.println(this.frame+" "+this.tires);
    }
}
class RoadBike implements Bike{
    String frame;
    String tires;
    public void setFrame(String frame){
        this.frame=frame;
    }

    public void setTires(String tires) {
        this.tires = tires;
    }
    public void getProperties(){
        System.out.println(this.frame+" "+this.tires);
    }
}
interface Builder{
    void buildFrame(String frame);
    void buildTires(String tries);
    Bike getResult();


}
class RoadBuilder implements Builder{
    private RoadBike roadBike=new RoadBike();

    @Override
    public void buildFrame(String frame) {
        roadBike.frame=frame;
    }

    @Override
    public void buildTires(String tries) {
        roadBike.tires=tries;
    }

    @Override
    public Bike getResult() {
        return roadBike;
    }
}

class MountainBuilder implements Builder{
    private MountainBike mountainBike=new MountainBike();
    @Override
    public void buildFrame(String frame) {
        mountainBike.frame=frame;
    }

    @Override
    public void buildTires(String tries) {
        mountainBike.tires=tries;
    }

    @Override
    public Bike getResult() {
        return mountainBike;
    }
}

class Director{
    private Builder builder=null;
    public Director(Builder builder){
        this.builder=builder;
    }
    public void Construct(String frame,String tries){
        builder.buildFrame(frame);
        builder.buildTires(tries);
    }
}

原文地址：https://blog.csdn.net/vince1998/article/details/137683397

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